Combat Grifter AB Baseball Bat -3 MCC (Mongrel Composite Construction) is used in the handle, which gives added durability and strength that is needed when using Titanium enhanced alloys for the barrel. RPT (Resonance Proof Taper), an ancient Combat secret, which, when combined with Gear Technology provides for zero sting and vibration in a two-piece bat. TEA (Titanium Enhanced Alloy) contains trace amounts of titanium and other elements to deliver incredible strength.